> Bluetooth implementations are trash.
They really are.
> Playback randomly starting when not told to...
Yup. Toyota and Subaru are particularly egregious about this. Something about using old cable/ipod implementations which would immediately reach for the default media player and telling it to start playing (and download a list of songs or some other BS).
> showing the wrong info on the display...
Yup. Especially if you have the audacity to use Spotify or something else.
There's some really shitty bluetooth audio interfaces out there. REALLY shitty.